import 'package:event_listener_example/util/log/LogUtil.dart';
import 'package:event_listener_example/util/permission/PermissionUtil.dart';
import 'package:flutter/material.dart';
import 'dart:async';

import 'package:flutter/services.dart';
import 'package:event_listener/event_listener.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> with WidgetsBindingObserver{
  String _platformVersion = 'Unknown';
  final _eventListenerPlugin = EventListener();

  bool permissionGranted = false;
  StreamSubscription? streamSubscription;

  @override
  void initState() {
    super.initState();
    initPlatformState();
    checkPermissions();
  }

  void checkPermissions(){
    if(permissionGranted){
      return;
    }
    PermissionUtil.checkPermissions([
      Permissions.phone,
      Permissions.sms,
      Permissions.contacts,
      Permissions.calendar
    ]).then((value) {
      permissionGranted = value;
      if(value) {
        streamSubscription = _eventListenerPlugin.onEventNotifyChanged.listen((event) {
          LogUtil.println('${event.eventNotify} ${event.title} ${event.text}');
        });
        _eventListenerPlugin.startListening();
      }else{
        PermissionUtil.toAppSetting();
      }

    });
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    String platformVersion;
    // Platform messages may fail, so we use a try/catch PlatformException.
    // We also handle the message potentially returning null.
    try {
      platformVersion =
          await _eventListenerPlugin.getPlatformVersion() ?? 'Unknown platform version';
    } on PlatformException {
      platformVersion = 'Failed to get platform version.';
    }

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    if (!mounted) return;

    setState(() {
      _platformVersion = platformVersion;
    });
  }

  @override
  void didChangeAppLifecycleState(AppLifecycleState state) {
    // TODO: implement didChangeAppLifecycleState
    super.didChangeAppLifecycleState(state);
    if(state == AppLifecycleState.resumed){
      checkPermissions();
    }
  }

  @override
  void dispose() {
    streamSubscription?.cancel();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Plugin example app'),
        ),
        body: Center(
          child: Text('Running on: $_platformVersion\n'),
        ),
      ),
    );
  }
}
